Unsupported assets
Circle Mint and Circle APIs only support USDC and EURC tokens on the indicated blockchains. Don't send unsupported tokens such as USDT or bridged USDC to your Circle Mint address. Doing so might result in a loss of funds.
Cosmos appchains
Circle Mint and Circle APIs only support USDC from Noble. If you transfer USDC from Noble to other appchains via IBC, you must transfer it back to Noble before you transfer it to your Circle Mint address.
Don't attempt to deposit USDC from an appchain other than Noble to your Circle Mint address. Doing so might result in a loss of funds.
Polkadot parachains
Circle Mint and Circle APIs only support USDC from Polkadot Asset Hub. If you transfer USDC from Polkadot Asset Hub to other parachains via XCM, you must transfer it back to Polkadot Asset Hub before you transfer it to your Circle Mint address.
Don't attempt to deposit XCM-transferred USDC from a parachain other than Polkadot Asset Hub to your Circle Mint address. Doing so might result in a loss of funds.